1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melomori [17]
3 years ago
15

A thief steals an ATM card and must randomly guess the correct seven​-digit pin code from a 4​-key keypad. Repetition of digits

is allowed. What is the probability of a correct guess on the first​ try?
Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
7 0

Answer:

The probability of correct guess on the first​ try is \frac{1}{16384}.

Step-by-step explanation:

Consider the provided information.

The ATM has 4 key pad and required a 7 digit pin, where repetition is allowed.

Thief has 7 slots and 4 choices per slot. Because repetition is allowed.

Thus, the total number of different ways are:

4×4×4×4×4×4×4 = 16384

But only one combination is proper code.

Therefore,

\frac{1}{16384}

Hence, the probability of correct guess on the first​ try is \frac{1}{16384}.

You might be interested in
The graph of a line and an exponential can intersect twice, once or not at all. Describe the possible number of intersections fo
Katyanochek1 [597]

Answer:

  c) parabola and circle: 0, 1, 2, 3, 4 times

  d) parabola and hyperbola: 1, 2, 3 times

Step-by-step explanation:

c. A parabola can miss a circle, be tangent to it in 1 or 2 places, intersect it 2 places and be tangent at a 3rd, or intersect in 4 places.

__

d. A parabola must intersect a hyperbola in at least one place, but cannot intersect in more than 3 places. If the parabola is tangent to the hyperbola, the number of intersections will be 2.

If the parabola or the hyperbola are "off-axis", then the number of intersections may be 0 or 4 as well. Those cases seem to be excluded in this problem statement.

7 0
3 years ago
What is the presidential succession act of 1947 and who are the next two positions in line for the presidency after the Vice Pre
nadezda [96]

Answer:

The 1947 Presidential Succession Act. An Act to ensure that the President's duties are carried out in the event that the President and Vice President are both removed, resign, die, or become incapacitated.    If the vice presidency is vacant at the same time as the presidency, or if the vice president is also incapacitated, the powers and duties of the presidency pass to the speaker of the House of Representatives, president pro tempore of the Senate, and then Cabinet secretaries, in that order, depending on eligibility.

Step-by-step explanation:

7 0
3 years ago
How many were served in 27 minutes
pshichka [43]

Answer:

Step-by-step explanation:

8/16 = 27/x

8x = 432

x = 54

7 0
3 years ago
Read 2 more answers
What is a relative frequency?
SVETLANKA909090 [29]

Answer:

"A relative frequency distribution is a table that shows the relative frequency for all categories as shown below. Notice that the sum of the relative frequencies is always equal to 1. The percentage of a category is found by multiplying the relative frequency of that category by 100."

Credits To: statistics-made-easy.com › what-is-relative-frequency

4 0
2 years ago
PLEASE HELP! 40 points!! I've been stuck on this for 30 minutes constantly coming up with all different answers, please help me.
hjlf

Answer:

36 units^2

Step-by-step explanation:

The area of a triangle is 1/2*base*height. Knowing this is just 2 triangles means you solve for 1 triangle, then multiply that by 2

4 0
3 years ago
Read 2 more answers
Other questions:
  • I REALLY NEED HELP NON THIS
    7·2 answers
  • At a firm, ten entry-level employees earn $40,000 a year, 6 junior-level employees earn $60,000 a year, and 3 managers earn $80,
    15·1 answer
  • Adam had $75.00 to buy his Dvds.
    12·1 answer
  • In past presidential elections in the United States, very long wait times have been witnessed at precincts (voting stations) in
    10·1 answer
  • Help question 3 thanks
    7·1 answer
  • BRAINLIEST FOR CORRECT ANSWER, IM FAILING SCHOOL AND NEED HELP ASAP. EVEN OFFICIAL HELP COUNTS
    5·1 answer
  • The question is on the picture
    14·1 answer
  • 4. Two students created a list of steps for the following construction. Which student has steps in the correct order, and which
    15·1 answer
  • What is 27 kilometers into meters?
    10·2 answers
  • Pls help me i’m really not to sure about this question
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!